Can blueberries clear away heat and toxins?
Generally speaking, blueberries can help clear heat and detoxify the body, but their effect is limited. The detailed explanation is as follows:

Blueberries are slightly cooling in nature and contain abundant water, vitamin C, and various antioxidant substances. The ample water content can promote metabolism and help dilute and eliminate some internal heat. Vitamin C and antioxidants can assist in removing toxins such as free radicals caused by accumulated internal heat. For mild discomforts like dry mouth and slight sore throat caused by internal heat, moderate consumption of blueberries may provide some relief, thereby exhibiting a certain degree of heat-clearing and detoxifying effect. However, the heat-clearing and detoxifying effect of blueberries is relatively mild and cannot be compared with specific heat-clearing medicinal materials; their effectiveness is limited for severe heat syndromes.
When consuming blueberries for auxiliary heat-clearing and detoxification purposes, it is important to control the quantity. Overconsumption might irritate the gastrointestinal tract due to their cooling nature, causing discomfort such as abdominal pain and diarrhea. Individuals with a cold constitution, weak spleen and stomach, or those prone to diarrhea should reduce their intake. The heat-clearing and detoxifying effects of blueberries cannot replace medications. If significant internal heat symptoms occur, such as severe sore throat or fever, prompt medical attention is necessary. Additionally, it is recommended to consume fresh blueberries. After thoroughly washing them, eating them directly or consuming them with warm water can better maximize their benefits.